/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.uber.hoodie;

import com.uber.hoodie.common.model.HoodieRecordPayload;
import java.util.Optional;
import org.apache.avro.Schema;
import org.apache.avro.generic.GenericRecord;
import org.apache.avro.generic.IndexedRecord;

/**
 * Empty payload used for deletions
 */
public class EmptyHoodieRecordPayload implements HoodieRecordPayload<EmptyHoodieRecordPayload> {

  public EmptyHoodieRecordPayload(GenericRecord record, Comparable orderingVal) { }

  @Override
  public EmptyHoodieRecordPayload preCombine(EmptyHoodieRecordPayload another) {
    return another;
  }

  @Override
  public Optional<IndexedRecord> combineAndGetUpdateValue(IndexedRecord currentValue, Schema schema) {
    return Optional.empty();
  }

  @Override
  public Optional<IndexedRecord> getInsertValue(Schema schema) {
    return Optional.empty();
  }
}
